| 摘要 |
<p>PURPOSE:To adhere a buried pipe with a fitting pipe stopper by bringing a round universal-type shaping tool with numerous thin-plate bodies disposed in the vertically movable state at its periphery, into contact with the bored position of the buried pipe, and forming the bored shape of the buried pipe. CONSTITUTION:Numerous thin plates 17 are fittingly inserted between the medium cylinder body 14 and large cylinder body 16 of a round universal-type shaping tool 12. When the cutting of a buried pipe 3 is completed and a center cutter shaft 6 is lowered, the lower ends of the thin plates 17 touch the outer peripheral edge of the hole 21 of the buried pipe 3 and ascend, and the lower end of the cylindrical thin plate group is formed into the same shape as the peripheral edge of the hole 21. In this state, the thin plate group is fixed at the medium cylinder body 14 by magnetic force and pulled up to the ground. As the lower end of the thin plate 17 is formed in an acute angle, accurate shaping can be performed. After pulling the thin plate group up to the ground, its shape copying is made on a fitting pipe stopper 22. Having the same shape at their contact faces, the fitting pipe stopper 22 and the buried pipe 3 can be adhered, thus preventing water leak and the like effectively.</p> |
